[asterisk-bugs] [JIRA] (ASTERISK-29869) rtp sequence number can skip after DTMF under certain bridges

Torrey Searle (JIRA) noreply at issues.asterisk.org
Thu Jan 20 06:49:06 CST 2022


Torrey Searle created ASTERISK-29869:
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             Summary: rtp sequence number can skip after DTMF under certain bridges
                 Key: ASTERISK-29869
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-29869
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Resources/res_rtp_asterisk
    Affects Versions: 16.7.0
            Reporter: Torrey Searle


while generating dtmfs, asterisk is not updating expectedseqno of packets that happen during that time.

this can result in asterisk making a jump in sequence numbers after the DTMF ends when it sees expectedseqno has fallen behind of the seqno of the frames it is forwarding

attached is a pcap showing the issue, filter on udp.dstport==8000 to see the rtp stream that has the jump in sequence numbers at the end of each dtmf



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